这是从建筑和系统工程的角度定义人类航天（HSF）航天器本体的三级标准的第一级。它为强调人-系统集成（HSI）需求和约束的系统和体系结构设计提供指导。在采用整体方法的同时，利用三维路线图（生命周期、功能、位置）对这一复杂领域进行分层，该路线图根据HSF项目、任务和航天器目标，引导用户达到高层次、基本和特定环境的设计要求。

This is the first level of a three-level standard defining a human spaceflight (HSF) spacecraft ontology from architectural and system engineering viewpoints. It provides guidance for systems and architecture design emphasizing human-system integration (HSI) requirements and constraints. While adopting a holistic approach, this complex domain is stratified using a three-dimensional roadmap (lifecycle, function, location) that guides the user to a high-level, fundamental, and context-specific design requirement based on the HSF program, mission and spacecraft goals.